cavity

noun

1. (anatomy) a natural hollow or sinus within the body

Synonym: bodily cavitycavum

2. a sizeable hole (usually in the ground)

e.g. they dug a pit to bury the body

Synonym: pit

3. soft decayed area in a tooth
progressive decay can lead to the death of a tooth

Synonym: cariesdental cariestooth decay

4. space that is surrounded by something

Synonym: enclosed space

1. 洞;孔;腔
A cavity is a space or hole in something such as a solid object or a person's body.

cavity

2. (牙科)龋洞，蛀牙洞
In dentistry, a cavity is a hole in a tooth, caused by decay.

1. 空洞：6.空洞与空腔 空洞(cavity)为肺内病变组织发生坏死,坏死组织经引流支气管排出而形成. X线表现为大小与形状不同的透明区(图3-1-13). 见于肺结核的干酪样坏死病变、肺脓肿、肺癌及某些真菌病. 空洞壁可由坏死组织、肺脓肿、肺癌及某些真菌病.